#!/bin/bash

# Slackware build script for frr

# Copyright 2018-2020 Thibaut Notteboom, Paris, FRANCE
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

cd $(dirname $0) ; CWD=$(pwd)

PRGNAM=frr
VERSION=${VERSION:-7.3.1}
BUILD=${BUILD:-2}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
# the name of the created package would be, and then exit. This information
# could be useful to other scripts.
if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
  exit 0
fi

TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

set -e

if [ "$(grep "^frr:x:357:357" /etc/passwd)" = "" -o \
     "$(grep "^frr:x:357:" /etc/group)" = "" -o \
     "$(grep "^frrvty:x:358:frr" /etc/group)" = "" ]; then
cat << EOF
The frr user/group and/or the frrvty group do not exist on this system.
Before running this script, please add them with the following commands:

groupadd -g 357 frr
groupadd -g 358 frrvty
useradd -c "FRR FRRouting suite" -d /var/lib/frr -s /bin/false -u 357 -g frr -G frrvty frr

EOF
  exit 1
fi

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$PRGNAM-$VERSION.tar.gz
cd $PRGNAM-$PRGNAM-$VERSION
chown -R root:root .
find -L . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
  -o -perm 511 \) -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;

./bootstrap.sh

# docs disabled due to no python2-sphinx
CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --sbindir=/usr/sbin \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --sysconfdir=/etc/frr \
  --localstatedir=/var/lib/frr \
  --mandir=/usr/man \
  --docdir=/usr/doc/$PRGNAM-$VERSION \
  --infodir=/usr/info \
  --enable-exampledir=/usr/doc/$PRGNAM-$VERSION/examples \
  --enable-snmp=agentx \
  --enable-multipath=256 \
  --enable-user=frr \
  --enable-group=frr \
  --enable-vty-group=frrvty \
  --enable-configfile-mask=0640 \
  --enable-logfile-mask=0640 \
  --enable-shell-access \
  --enable-rpki \
  --enable-fpm \
  --enable-vtysh \
  --enable-watchfrr \
  --disable-doc \
  --disable-doc-html \
  --disable-systemd \
  --disable-static \
  --without-libpam \
  --build=$ARCH-slackware-linux

make
make install-strip DESTDIR=$PKG

install -d -m 750 -o frr -g frr $PKG/etc/frr $PKG/var/log/frr $PKG/var/lib/frr

install -D -m 640 -o frr -g frr tools/etc/frr/daemons $PKG/etc/frr/daemons.new
install -D -m 640 -o frr -g frrvty tools/etc/frr/vtysh.conf $PKG/etc/frr/vtysh.conf.new

install -D -m 644 $PKG/usr/sbin/frrinit.sh $PKG/etc/rc.d/rc.frr.new
install -D -m 644 redhat/frr.logrotate $PKG/etc/logrotate.d/frr.new

sed -i 's|#!/usr/bin/python|#!/usr/bin/python3|g' $PKG/usr/sbin/{frr-reload.py,generate_support_bundle.py}

# Don't ship .la files:
rm -f $PKG/{,usr/}lib${LIBDIRSUFFIX}/*.la
rm -f $PKG/usr/lib${LIBDIRSUFFIX}/frr/modules/*.la

# disable man and info for now
#find $PKG/usr/man -type f -exec gzip -9 {} \;
#for i in $( find $PKG/usr/man -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done

#rm -f $PKG/usr/info/dir
#gzip -9 $PKG/usr/info/*.info*

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a \
  COPYING* README.md \
  $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
cat $CWD/doinst.sh > $PKG/install/doinst.sh

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE
